Short answer: It depends on the services you selected. Each service has its own estimated time to completion, which is displayed as you select the services (see screenshot below).
Some services depend on external factors, for example, how long a reference check takes depends on whether the reference can be reached. Other services like criminal record checks vary in their turnaround times depending on the country the check is issued for. Below is a summary of the turnaround times per service.
If your check exceeds the estimated times below please visit our helpdesk homepage for notices about service disruptions/delays, and please check you email (including spam folder) for any notifications from Certn regarding possible issues with your check. If there are no notices about why your check might be taking longer, please reach out to firstname.lastname@example.org.